Results 31 to 40 of about 30,622 (304)

Synthesis, Characterization, and Catalytic Properties of Magnetic Fe3O4@FU: A Heterogeneous Nanostructured Mesoporous Bio-Based Catalyst for the Synthesis of Imidazole Derivatives

Frontiers in Chemistry, 2020
In this protocol, Fucoidan (FU), a fucose-rich sulfated polysaccharide extracted from brown algae Fucus vesiculosus was used for in situ preparation of magnetic Fe3O4@FU. Nanoco magnetic properties of Fe3O4@FU were investigated by energy dispersive X-ray
Maryam Banazadeh, Sara Amirnejat, Shahrzad Javanshir   +2 more
doaj   +1 more source

The Octarepeat Domain of the Prion Protein Binds Cu(II) with Three Distinct Coordination Modes at pH 7.4 [PDF]

, 2005
The prion protein (PrP) binds Cu2+ in its N-terminal octarepeat domain. This unusual domain is comprised of four or more tandem repeats of the fundamental sequence PHGGGWGQ.
Antholine, William E., Aronoff-Spencer, Eliah, Bennett, Brian, Chattopadhyay, Madhuri, Gerfen, Gary J., Jackson, Pilgrim J., Millhauser, Glenn L., Newell, Dustin J., Peisach, Jack, Walter, Eric D.   +9 more
core   +3 more sources

The Schistosoma mansoni Cytochrome P450 (CYP3050A1) Is Essential for Worm Survival and Egg Development. [PDF]

, 2015
Schistosomiasis affects millions of people in developing countries and is responsible for more than 200,000 deaths annually. Because of toxicity and limited spectrum of activity of alternatives, there is effectively only one drug, praziquantel, available
Barnard, Andrew H, Fisher, Ethan MS, Karumudi, Bhargava, Podust, Larissa M, Thatcher, Gregory RJ, Williams, David L, Ziniel, Peter D   +6 more
core   +3 more sources

Lower micromolar activity of the antifungal imidazoles on the bacterial-type bifunctional aldehyde/alcohol dehydrogenase (AdhE) in Cryptosporidium parvum and in vitro efficacy against the zoonotic parasite

International Journal for Parasitology: Drugs and Drug Resistance
Cryptosporidium parvum is a waterborne and foodborne zoonotic protozoan parasite, a causative agent of moderate to severe diarrheal diseases in humans and animals. However, fully effective treatments are unavailable for medical and veterinary uses. There
Haichuan Chen, Dongqiang Wang, Chenchen Wang, Peng Jiang, Mingxiao Liu, Jigang Yin, Yonglan Yu   +6 more
doaj   +1 more source

The Reaction of Aminonitriles with Aminothiols: A Way to Thiol-Containing Peptides and Nitrogen Heterocycles in the Primitive Earth Ocean

Life, 2018
The Strecker reaction of aldehydes with ammonia and hydrogen cyanide first leads to α-aminonitriles, which are then hydrolyzed to α-amino acids.
Ibrahim Shalayel, Seydou Coulibaly, Kieu Dung Ly, Anne Milet, Yannick Vallée   +4 more
doaj   +1 more source

Polyfunctional Imidazoles: VIII.* 1-Aryl-4-chloro- 5-[R-sulfanyl(R-sulfonyl)methyl]-1H-imidazoles [PDF]

, 2014
Alkylation of (1-aryl-4-chloro-1H-imidazol-5-yl)methanethiols with alkyl halides, propargyl bromide, or chloroacetic acid gave 1-aryl-5-(R-sulfanylmethyl)-4-chloro-1H-imidazoles.
Chornous, V.A., Grozav, A.N., Palamar, A.A., Vovk, M.V.   +3 more
core   +1 more source

Insights into the Nature of Synergistic Effects in Proton-Conducting 4,4−1H,1H-Bitriazole-Poly(ethylene oxide) Composites [PDF]

, 2009
A nitrogen-containing heterocycle (NCH), 4,4-1H-1H-bi-1,2,3-triazole (bitriazole), capable of mimicking the hydrogen bonding of water in the solid state is synthesized and its ability to conduct protons in the presence of poly(ethylene oxides) under ...
Alabi, Christopher A., Chen, Zhongwei, Davis, Mark E., Yan, Yushan S.   +3 more
core   +1 more source

Solvothermal One-Pot Synthesis of a New Family of Chiral [Fe₄O₄]-Cubane Clusters with Redox Active Cores

Magnetochemistry, 2022
The two achiral ligands tris(1-methyl-1H-imidazol-2-yl)methanol ((mim)3COH) and bis(1-methyl-1H-imidazol-2-yl)(3-methylpyridin-2-yl)methanol ((mim)2(mpy)COH) form on reaction with Fe(BF4)2∙6H2O, the octahedral low-spin complexes [Fe((mim)3COH)2](BF4)2 ...
Marco Seifried, Frieda M. Kapsamer, Michael Reissner, Jan M. Welch, Gerald Giester, Danny Müller, Peter Weinberger   +6 more
doaj   +1 more source

Current progress in the synthesis of imidazoles and their derivatives via the use of green tools

Heterocyclic Communications
Imidazoles have a unique position in heterocyclic chemistry as these constitute the basic framework of several bio-molecules. Thus, increasing research is being carried out on the synthesis of imidazoles and their derivatives, mainly because of the ...
Saha Debasree, Mukhopadhyay Chhanda
doaj   +1 more source

Identification and characterization of aging products in the glyoxal/ammonium sulfate system – implications for light-absorbing material in atmospheric aerosols [PDF]

Atmospheric Chemistry and Physics, 2012
In this study we report the identification of bicyclic imidazoles in aqueous aerosol mimics using HPLC-ESI-MS/MS. 2,2'-Biimidazole was identified to be a major contributor to the 280 nm absorbance band observed in mixtures of glyoxal and ammonium sulfate,
C. J. Kampf, R. Jakob, T. Hoffmann
doaj   +1 more source